EP 2127790 B1 20130109 - DRILLING APPARATUS
Title (en)
DRILLING APPARATUS
Title (de)
BOHRVORRICHTUNG
Title (fr)
APPAREIL DE PERÇAGE
Publication
Application
Priority
- JP 2008051682 W 20080201
- JP 2007025194 A 20070205
Abstract (en)
[origin: EP2127790A1] A cutting tool having a small diameter is prevented from being heavily loaded to prevent a reduction in service life thereof. An electric drill that rotationally drives an annular cutting tool by using a drill motor (46) as a drive source is brought close to a workpiece by a drill feed unit having a feed motor (20a) to drill the workpiece with the annular cutting tool. In the course of drilling, the motor current of the drill motor (46) is detected by a motor current detector (50). A main controller (64) compares the result of detection by the motor current detector (50) with a preset reference value to identify the tool diameter of the annular cutting tool being used for drilling and sets a control mode for each tool diameter according to the identification result.
IPC 8 full level
B23B 47/18 (2006.01); B23Q 5/22 (2006.01); B23Q 5/58 (2006.01); B23Q 15/08 (2006.01); B23Q 17/09 (2006.01)
CPC (source: EP KR US)
B23B 47/00 (2013.01 - KR); B23Q 5/22 (2013.01 - EP KR US); B23Q 11/04 (2013.01 - EP US); B23Q 15/08 (2013.01 - KR); B23Q 17/09 (2013.01 - KR); B23Q 17/0961 (2013.01 - EP US); B23Q 17/0995 (2013.01 - EP US); G05B 19/4065 (2013.01 - EP US); G05B 2219/42289 (2013.01 - EP US); Y10T 408/17 (2015.01 - EP US); Y10T 408/675 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2127790 A1 20091202; EP 2127790 A4 20120104; EP 2127790 B1 20130109; CN 101641175 A 20100203; CN 101641175 B 20110427; JP 2008188703 A 20080821; JP 4787768 B2 20111005; KR 101066060 B1 20110920; KR 20090108617 A 20091015; TW 200936279 A 20090901; TW I333876 B 20101201; US 2010028093 A1 20100204; WO 2008096681 A1 20080814
DOCDB simple family (application)
EP 08710714 A 20080201; CN 200880007787 A 20080201; JP 2007025194 A 20070205; JP 2008051682 W 20080201; KR 20097016382 A 20080201; TW 97104682 A 20080205; US 52577808 A 20080201